ajax Form Submit 질문입니다.

<form id="mem_reg" action="/member/mem_reg.php" method="post" role="form"> .........a href="javascript:goSubmit('mem_reg')" >가입</a>

function goSubmit(id) {    var form = $('#' + id);    if (!checkPreSubmit(form)) {        return;    }    $.ajax({        type: 'POST',        url: form.attr('action'),        data: form.serialize(),        dataType: 'JSON',        success: function (data) {            alert(data.msg);            if (data.code == '0') {                location.replace('/');            }         }    }); }